[PATCH] tests/qemu-iotests: Check for a functional "secret" object before using it

[Thomas Huth <thuth@redhat.com>]

From: Thomas Huth <thuth@redhat.com>

QEMU iotests 049, 134 and 158 are currently failing if you compiled
QEMU without the crypto libraries. Thus make sure that the "secret"
object is really usable and skip the tests otherwise.

Reported-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 tests/qemu-iotests/049       |  2 ++
 tests/qemu-iotests/134       |  1 +
 tests/qemu-iotests/158       |  1 +
 tests/qemu-iotests/common.rc | 14 ++++++++++++++
 4 files changed, 18 insertions(+)

diff --git a/tests/qemu-iotests/049 b/tests/qemu-iotests/049
index ed12fa49d7f..a1b922060db 100755
--- a/tests/qemu-iotests/049
+++ b/tests/qemu-iotests/049
@@ -39,6 +39,8 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 
 _supported_fmt qcow2
 _supported_proto file
+_require_secret
+
 
 filter_test_dir()
 {
diff --git a/tests/qemu-iotests/134 b/tests/qemu-iotests/134
index b2c3c03f08b..cc1e35eb161 100755
--- a/tests/qemu-iotests/134
+++ b/tests/qemu-iotests/134
@@ -39,6 +39,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 
 _supported_fmt qcow qcow2
 _supported_proto file
+_require_secret
 
 
 size=128M
diff --git a/tests/qemu-iotests/158 b/tests/qemu-iotests/158
index 3a9ad7eed03..8fc4e986532 100755
--- a/tests/qemu-iotests/158
+++ b/tests/qemu-iotests/158
@@ -39,6 +39,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 
 _supported_fmt qcow qcow2
 _supported_proto file
+_require_secret
 
 
 size=128M
diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
index e977cb4eb61..10d83d8361b 100644
--- a/tests/qemu-iotests/common.rc
+++ b/tests/qemu-iotests/common.rc
@@ -1053,6 +1053,20 @@ _require_one_device_of()
     _notrun "$* not available"
 }
 
+_require_secret()
+{
+    if [ -e "$TEST_IMG" ]; then
+        echo "unwilling to overwrite existing file"
+        exit 1
+    fi
+    if $QEMU_IMG create -f $IMGFMT --object secret,id=sec0,data=123 \
+                 -o encryption=on,encrypt.key-secret=sec0 "$TEST_IMG" 1M 2>&1 \
+                 | grep "Unsupported cipher" ; then
+        _notrun "missing cipher support"
+    fi
+    rm -f "$TEST_IMG"
+}
+
 _qcow2_dump_header()
 {
     if [[ "$1" == "--no-filter-compression" ]]; then
-- 
2.52.0